The death of Robin Williams shocked fans the world this week, but sadly, he is but one of many stars to have passed away many years too soon.
For all the joy he brought to millions of lives, the actor battled substance abuse and severe depression at various points in a life cut short by his own choice.
He is far from alone. Be it from severe illness, addiction or other tragic circumstances, some of the stars who shone the brightest also met untimely ends.
From Robin Williams' suicide to Philip Seymour Hoffman's overdose, Paul Walker's car crash and others that remain cloaked in mystery, it's not a short list.
Their respective careers, however, remain etched in history. They may be gone from the world we inhabit, but their legacies live on, each and every day.
Robin, Philip and so many others who tragically passed on have left their marks on this world, and having touched us all, will always have a place in our hearts.
Scroll through our list of 23 shocking celebrity deaths above as we look back on some of the famous and talented individuals who we lost far too early.